baber/WOPTO huggingface dataset:
Patent GB-1393440-A (GB)
Title: Pre-heating apparatus particularly for pre-heating steel ingots  or blooms
IPC: B21B45/00
Filed: 1972-12-06
Abstract: 1393440 Preheating furnaces KAWASAKI JUKOGYO KK 6 Dec 1972 [6 Dec 1971 11 Jan 1972 3 March 1972] 56392/72 Heading F4B A preheating furnace comprises a casing having in one zone a number of jets for hot combustion gases and a conveyer which feeds articles to be heated successively through the furnace, highspeed gas streams from the jets impinging on the articles to effect an efficient transfer of heat to the articles. In the form of Fig. 1, the articles 1 to be preheated are moved through the furnace by walking beams 3. In the jet zone a of the furnace, banks of nozzles 9 are provided above and below the articles. The outside of the casing is lined with insulating material 19 and the casing is made of heat resitant steel. Zone b is a convection zone, the heat supply being the current of hot gases leaving zone a. The interior of the casing in this zone is lined with insulating material to reduce heat losses. Articles are fed to the furnace at 15 and taken off at 16. In another form (Fig. 4, not shown) both zones a and b have hot gas jets, the gas being taken off at the end of zone a and its pressure increased by a blower before being applied to the nozzles of zone b. In the form of Fig. 6 the articles 1 pass through a preheating zone c, a heating zone b and a soaking zone a. The articles are moved over a skid 2 by a pusher being subject in zone c to hot jets from nozzles 4. Nozzles 4 are supplied with combustion gas from header 16 by a blower. After being moved through zone c by the pusher, the articles may be moved through zones b and a by a walking beam conveyer. In the form of Fig. 9 there are four zones, zone d having nozzles 4 and zones c, b and a as before. Hot gas for the nozzles is extracted from the flue between zones b and c. The hot gases in duct 6 are driven towards the nozzle duct 5 by nozzle 8 to which is applied gas from flue e compressed by blower 9. Compressed gas is also applied to nozzle 13 to form a film of gas 16 to seal between zones c and d. The pressure in the interior of the furnace is controlled by controlling the dampers 14 in the ducts 6. The jet zone d may be separated from the furnace zones a, b, c, Fig. 11 (not shown).
Patent GB-1123450-A (GB)
Title: Mounting arrangement for semiconductors
IPC: H01F27/40
Filed: 1966-12-20
Abstract: 1,123,450. Rectifying. GENERAL ELECTRIC CO. 20 Dec., 1966 [21 Dec., 1965], No. 56859/66. Heading H2F. [Also in Division H1] A mounting arrangement for a semi-conductor device comprises an annular chamber for the through passage of cooling liquid, in an annular member which is mechanically and electrically connected to (i) one electrode of the semi-conductor and to the load, and (ii) a conducting plate connected to a second electrode on the semi-conductor and supported by the annular member. The embodiment consists of a transformer-rectifier assembly for a wye, 6-phase parallel double wye conversion system. Fig. 5 shows the transformer tank 40 with six rectifying units 32 fixed to each side wall and enclosed in an auxiliary cabinet with windows (Fig. 4, not shown). Cooling is effected by circulating oil from a water cooled heat exchanger 100 to rectifier units 32 and then via common return pipe 120 to the transformer tank and finally to the heat exchanger 100 via pipe 102. Fig. 7 shows one of the units 32 fixed to the wall 52 of the transformer tank 40 and comprising a plurality of silicon diodes 132 arranged in two circles. The anodes of the diodes 132 are clamped to the surface of an annular hollow heat sink member 123 with inlet and outlet ports 110, 112 for the circulating oil; electrical connection is provided by bolting annulus member 123 to flange 142 on outer coaxial conductor 56 which penetrates the transformer tank where it is connected to negative D.C. bus-bars within the tank. The cathodes of diodes 132 are connected via fuses 64 to annular plate 147 and thus to carrier coaxial conductor 58 which is connected to the appropriate transformer secondary. A neon indicator lamp 68 is connected in parallel with each fuse 64. The arrangement provides for easy access to the rectifying units while disposing substantially all the conductors within the transformer tank.
Patent GB-1243676-A (GB)
Title: Bistable trigger circuits
Inventor: VATIN ROBERT
IPC: H03K3/2897
Filed: 1968-12-02
Abstract: 1,243,676. Transistor bi-stable circuits. COMMISSARIAT A L'ENERGIE ATOMIQUE. 2 Dec., 1968 [14 Dec., 1967], No. 57092/68. Heading H3T. A first emitter coupled pair of transistors 24, 26 has its collectors connected to respective bases of a second emitter coupled pair 36, 34, one transistor 34 of which is cross-coupled with one 26 of the first pair to give a threshold whose value (v 2 -v r ,Fig. 3, not shown) is determined by a current source transistor 42, and is equal to the hysteresis voltage (v 2- v 1 ). This transistor 42 is controlled through a transistor 44 by the setting of a potentiometer 50, which also sets the standing D.C. level (v r ) at the base of T24 to be the same as the lower threshold limit. Transistors 26, 36 are normally on, 24, 34 off; when an input signal (Fig. 3, not shown) at 56 goes above earth, T24 turns on and T26 off. Regenerative switching between T34, T26 speeds the process, and T36 turns off to produce an output. Resetting occurs when the input falls to make T24 base lower than the collector voltage of T34 which is the lower limit of the hysteresis and depends (inter, alia) upon the T42 current. In another embodiment (Fig. 6, not shown), a constant current transistor (72) is provided in the emitter circuit of the first emitter-coupled pair (64, 66); the second emitter-coupled pair and their variable current source transistor (86, 88, 94) being in this case PNP type, and the other connections being functionally similar to Fig. 5. In this case the potentiometer (104) adjusting the current in the second pair (86, 88) does not vary the D.C. standing level of the input transistor, and it is the upper limit of the threshold (v 2 ) which is now variable.
Patent GB-1452966-A (GB)
Title: Apparatus for wrapping an article or articles
IPC: B65B9/02
Filed: 1973-12-13
Abstract: 1452966 Wrapping ARENCO-JM AB 13 Dee 1973 [14 Dec 1972] 57711/73 Heading B8C In wrapping apparatus in which an article is advanced on a conveyer 6 through a curtain of foil 5 and jaws 7 weld foil portions together behind the article, there is at least one foil-engaging brake roller 8 on each side of the conveyer and mounted to reciprocate to tighten the foil across the conveyer after the foil has been welded behind an article. Each roller 8 may be adjustably braked and have a roller 9 to press the foil against it. The rollers may be rubber rollers. The rollers may be mounted on the welding jaws which may be mounted for linear or pivotal movement. Alternatively the rollers may be supported on separate pivotal arms which may be independent of or be linked to the pivotal arm of the jaws.
Patent GB-1099250-A (GB)
Title: Screening apparatus
IPC: B01D29/01
Filed: 1966-12-23
Abstract: 1,099,250. Filter; liquid separation of solids. CANADIAN INGERSOLL-RAND CO. Ltd. Dec. 23, 1966 [Dec. 27, 1965], No. 57759/66. Heading B1D. A pressure screening apparatus for screening a liquid paper pulp mixture of acceptable fibre and debris comprises a rotary cylindrical wall member 24 with projections 56, a perforated cylindrical screen 12 in spaced relation around member 24 to form a screening zone 60 defined by member 24 and screen 12 through which the liquid mixture can pass while rejecting debris, an inlet 8 for feeding the liquid mixture to the screening zone, an outlet 20 for discharging rejected material from the screening zone, and conduits 62, 63, 64 (e.g. greater than or equal to 1" diam.) for discharging dilution liquid into the screening zone, said conduits having discharge openings projecting through the screen and facing rotary wall member 24, and said discharge opening being located intermediate said inlet and outlet. Filtered liquid leaves at 16. A gutter trap 9 communicates with the inlet gutter 6 for removing heavy debris or chips thrown to the periphery by centrifugal force as the liquid mixture enters the apparatus through inlet 8, and the remaining mixture then passes over baffle 10 into the screening zone 60. The embodiment of Fig. 6 (not shown) has a flat circular screen (12') and a dish shaped rotary wall member (60'). Electric motor 34 is capable of rotating wall member 24 at a surface speed of 6,000 f.p.m. when the apparatus is full of liquid.
Patent GB-1405660-A (GB)
Title: Attenuating circuit
IPC: H03H7/25
Filed: 1972-12-19
Abstract: 1405660 Variable attenuators TELEFONAKTIEBOLAGET L M ERICSSON 19 Dec 1972 [20 Dec 1971] 58630/72 Heading H4R In a variable attenuator, particularly for high frequency signals, the control current which varies the impedance of a variable impedance element, e.g. diodes D21 or D11, across the signal path, is derived from a differential amplifier F1 in the negative feedback path of which the impedance is connected. The control signal which governs the control current is fed to the non inverting input of the differential amplifier F1 and a control device, e.g. a diode D12 is connected from the inverting input, to which the negative feedback is applied, to earth. The current-voltage characteristic of the control device governs the control voltage-control current characteristic of the circuit. To provide temperature stabilization the control device, e.g. diode D12, can be located in a constant temperature enclosure or a diode having the same characteristics as the control diode can be located, suitably biased to the normal operating current, in the control signal input lead, Fig. 3.
Patent GB-1370817-A (GB)
Title: Chart plotter
IPC: G07C3/06
Filed: 1972-10-27
Abstract: 1370817 Indicators N K POWELL 27 Oct 1972 [18 Dec 1971] 58895/71 Heading G5C A chart plotting device consists of a base chart 2 marked with radial lines 4, each corresponding to a machine, for example, and a rotatable disc 3 centred on pin 9 and bearing a slot or a series of holes 5 in the form of a spiral, the holes 5 or radial distances of the slot at intervals being spaced along the spiral such that each is radially nearer the centre than the preceding hole or mark by constant amount. The radial distance along each line represents machine usage time, and disc 3 is rotated to bring a hole or mark into coincidence with a selected line to indicate the required time, and a mark is made on the line. The base and disc may be translucent and rear-illuminated. In one form, lines 4 are slots in which time markers are slidable.
Patent GB-1330877-A (GB)
Title: Production of percarboxylic acids
IPC: C07C409/24
Filed: 1970-12-11
Abstract: 1330877 Percarboxylic acids DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 11 Dec 1970 [13 Dec 1969 (2)] 58921/70 Heading C2C Percarboxylic acids are obtained by reacting the corresponding carboxylic acids with hydrogen peroxide in the presence of acid catalysts, the reaction being conducted in completely anhydrous solution and either (a) the solution containing neither alcohols nor compounds which form alcohols with hydrogen peroxide under the reaction conditions and the water formed during the reaction being continuously removed by azeotropic distillation with the solvent for the hydrogen peroxide, or (b) the solvent used being a carboxylic ester and a quantity of alcohol corresponding to the ester used being added to the reaction mixture in an amount corresponding to the quantity of ester consumed by perhydrolysis, and water formed in the reaction being continuously removed by azeotropic distillation.
Patent GB-1413060-A (GB)
Title: X-ray spectrometer
IPC: G21K1/06
Filed: 1973-12-19
Abstract: 1413060 X-ray spectrometers COMPAGNIE D'APPLICATIONS MECANIQUES A L'ELECTRONIQUE AU CINEMA ET A L'ATOMISTIQUE 19 Dec 1973 [19 Dec 1972) 58961/73 Heading H5R An X-ray spectrometer comprises a plate 20 having first and second end points M, P constrained by slides 12, 13 to move along axes OX, OY, an analyser crystal 2 at the point M, a member 15 also moving parallel to OY and rotatably linked to plate 20 at 22, a main arm 24 pivoted at 23 to plate 20, a link 30 pivoted to arm 24 at 32, the distance between 23 and 32 being equal to the radius of the Rowland circle of the apparatus, an X-ray detector 3 and an X- ray source 1 at 0. A roller 36 is held against a cylindrical surface 26 of radius equal to that of the Rowland circle. The member 15 and the arm 24 have portions of interlocking cylindrical gearing of 2 : 1 ratio so that the arm moves through twice the angle covered by movement of the member 15. The detector 3 can be pivoted on link 30 at F and its direction determined by a pin and slot 27, 41. Roller 36 and surface 26 can be replaced by a pin and guide slot.
Patent GB-1255183-A (GB)
Title: Heat developable diazotype photoprinting materials
IPC: G03C1/52
Filed: 1968-12-16
Abstract: 1,255,183. Heat-developable diazotype materials. EUGENE DIETZGEN CO. Dec.16, 1968 [Dec. 19, 1967], No.59654/68. Heading G2C. A heat-developable diazotype material comprises a support, a heat-developable diazotype layer and a translucent plastics coating or laminate covering the diazotype composition and capable of remaining intact during the subsequent to heat development. Specified heat-developable compositions are (i) diazonium salt, coupler and urea or guanidine or an alkyl-substituted urea or guanidine and optionally a heat-sensitive acid e.g. malonic, malic, maleic or gluconic acid, (ii) a diazonium salt and a polyhydroxybenzoic acid coupler e.g. phlorogluensinol carboaylic acids, gamma-resoreylic acids and 1, 3 dihydroxybetanaphthric acid which is heat-sensitive and (iii) a diazonium salt and a heat-sensitive enolate coupler of formula: wherein X is sodium or potassium is alkyl with 1-18 carbon atoms and the benzene ring may have a fused benzenering thereon. In the examples a support is subbed with a layer of polyvinyl acetate, silica and starch, coated with the heat-developable diazotype layer which may contain silica, starch, polyvinyl acetate, ammonium citrate or polyethylene glycol and then an adhesive layer of polyester film is applied over the diazotype layer and to the back of the support. The material is imagewise exposed and heat-developed to produce a protected dye image.
Patent GB-1268579-A (GB)
Title: Load weighing apparatus for elevators
IPC: G01G3/15
Filed: 1970-12-17
Abstract: 1,268,579. Controlling lift winding apparatus. OTIS ELEVATOR CO. 17 Dec., 1970 [18 Dec., 1969], No. 60071/70. Headings B8B and B8L. [Also in Divisions F2, G1 and G4] An elevator system 20 (Fig. 1) comprising a lift car 21, counterweight 22 and hoist motor 24 driving a shaft 29, has brake means 40 mounted on platform 27 which incorporates a torque sensor for measuring the live weight load on the system in car 21. The hoist rope 23 interconnecting the car 21 and counterweight 22 passes over a drive sheave integrally attached to a brake disc 31 which passes between two fixed arms 50, 51 (Fig. 3) centrally slotted at 53, 54 (Fig. 7) to allow brake pads 71, 72 to be forced against the sides 43, 44 of disc 31. The pads are carried by arms 56, 57 controlled by energization of a coil in recess 55 to pivot about pins 65, 66. The torque sensor 42 comprises four magnetostrictive transducers 110-113 (Fig. 7) each consisting of a two-winding transformer 126-133 (Fig. 14) with a magnetostricoive core 114-117 subjected to the resultant torque on the drive shaft when the disc 31 is braked. Windings 130, 131 produce output signals when the loaded lift car weighs less than the counterweight and windings 132, 133 when it weighs more. The output signals are rectified at 150, 156, biased by a D.C. from rectifier 164 and fed to SCRs 168, 179, 188, 197 to selectively energize relays K1- K4 and lamps 172, 182, 191 and 200 in accordance with the live weight in the car 21, when the car is stationary. The relay contacts determine the subsequent movement of the lift car in accordance with known arrangements, not described, and a new weight measurement is made when the lift car is next stationary.
Patent GB-1309400-A (GB)
IPC: G11B17/32
Filed: 1970-12-18
Abstract: 1309400 Disc playback LICENTIA PATENTVERWALTUNGS-GmbH 18 Dec 1970 [23 Dec 1969] 60239/70 Heading G5R In a playback arrangement for records of the type described in Specification 1,266,203, or disc records carrying a magnetic or optical recording, in which the record 2 is driven by spindle 3 and drive member 4 and during rotation is supported on a layer of air between the record and base member 5, the effect of the electrostatic charge on the record which results in the record being attracted to the base member is cancelled or reduced. In a first arrangement, Fig. 1 (not shown), the base is formed of insulating material on which substantially no induced charge is formed. In a second arrangement the base is of metal and the underside of the record is coated with a thin metal layer 8 or a layer of conducting paint and this layer is electrically connected via the drive member with the base 5.
Patent GB-1372229-A (GB)
Title: Apparatus for holding objects together using a weldable foil  of an elastic material
IPC: B65B9/02
Filed: 1971-12-29
Abstract: 1372229 Seaming non-metallic sheet material KOOPERATIVA FORBUNDET EKONOMISK FORENING 29 Dec 1971 [29 Dec 1970] 60427/71 Heading B5K [Also in Division B8] In apparatus in which objects to be wrapped are passed between supply means between which a curtain of elastic weldable foil extends so that the foil is wrapped around the objects, there is a pair of jaws to seal the foil portions 5 at the back of the objects, each jaw comprises a pair of clamping members 14 or 15, and a pair of welding dies 16 or 17 located between the clamping members, a reciprocable knife 18 being disposed between the dies of one jaw to cut the foil before the dies weld the foil. Cooling air passageways 20 are provided in one or both of the jaws. The objects may be on a pallet. A sticky film may be applied to one or both end surfaces of the package.
Patent GB-1259670-A (GB)
Title: Improvements in or relating to telephone operators desk sets
IPC: H04M3/58
Filed: 1969-12-17
Abstract: 1,259,670. Telephone exchanges. SIEMENS AG. 17 Dec., 1969 [20 Dec., 1968], No. 61407/69. Heading H4K. An operator's desk set includes special service keys which change their function during successive operational sequences, indicators bearing a plurality of legends for each key and illumination means controlled by previous key operations and arranged to illuminate those legends appropriate to the current functions of the keys. As described each legend is on a separate indicator panel. The panels are illuminated by lamps controlled by interconnected relay circuits no details of which are given. Interlocks may be provided to prevent the effective operation of keys not applicable in particular sequences.
Patent GB-660506-A (GB)
Abstract: 660,506. Air supply for combustion. HOBAN, D. June 16, 1949, No. 16033/49. Class 126 A metal domestic fire grate comprises an ash-box chamber below floor level having on its front face an air trunk which is wholly below floor level and has an air inlet at the bottom of its front face and a controlled air outlet at the top of its back face above the ash-box and below the grate bottom. An air trunk 9 at the front of the ash-box chamber 4 beneath the floor level carries air from an inlet 10 at the base of the chamber 4 through openings 6 controlled by a hit-and-miss damper 7 and above the ash-box 11 to the space below the grate bottom 13. The grate bottom 13 rests in a grate frame 12 above the floor level and may be domed, flat or dished. 'The hit-and-miss damper 7 is controlled by a lever 8 on the front of the frame 12. A space 14 at the back of the grate is opened when a boiler is provided.
Patent GB-706977-A (GB)
Abstract: 706,977. Web roll supports. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Oct. 31, 1951 [Nov. 3, 1950], No. 26868/50. Class 100 (1). [Also in Group VIII] An end supporting bracket for a batch-bar, on or from which a length of textile material is wound or unwound is formed with a U-shaped slot 14 to engage the end of the batch-bar and allow movement thereof along the slot during winding or unwinding, and with a supporting recess 12 adjacent the open end of one side 10 of the slot, and with an extension of the other side wall 11, which may be so shaped as to guide the end of the batch-bar into the recess. A portion of the side wall 11 may be formed as a pivoted latch 13, permitting lateral ingress of the batch-bar into the slot; its edges 26 and 27 are curved or chamfered, respectively, to permit inward opening only, and it is weighted or spring- biased so as normally to remain closed.
Patent GB-718118-A (GB)
Abstract: 718,118. Carburetters. NALLINGER, F. Dec. 5, 1951 [Dec. 5, 1950], No. 28542/51. Class 7(3) In an auxiliary starting arrangement, such as a starting carburetter, which is brought into action by means of a manually-operated linkage, such as a lever 11 normally spring-pressed against a stop 13 and a linkage 14 connected to a piston 15 working in a cylinder 16 connected by a Bowden cable 18 to a draw knob 19, and which is put out of action automatically under control of a device responsive to engine running conditions, a detent 24 for holding the linkage when manually operated is adapted to be disengaged therefrom by the engine-controlled device, shown as a thermostat 23 disposed in the cooling-water jacket of the engine. 10 is the main carburetter. In a modification, a detent which co-operates with an inclined surface on an operating rod of the starting carburetter is actuated by a solenoid in a circuit comprising a regulating resistance which can be cut into and out of the circuit progressively or in steps by a bimetallic device subjected to the temperature of the wall of the engine. The operating rod is actuated through a lost-motion connection comprising a slot and a pin, hook or loop.
Patent GB-1301916-A (GB)
IPC: F16L55/24
Filed: 1970-11-09
Abstract: 1301916 Drainage filters K G E DERMAN 9 Nov 1970 [12 Nov 1969] 53112/70 Heading E1C A filter 13, for preventing the passage of debris between a downpipe 11 of a drainage system and a connecting pipe 16 to a drain, is incorporated within an upwardly open funnel 12 which receives the downpipe 11 at one side, while the other side provides manual access to the filter for cleaning purposes, the filter being in the form of an inclined plate sloping downwardly towards the access side of the funnel. The filter may be an integral part of a moulded plastics funnel, as shown, the funnel having alternative slots 17, 18 to receive downpipes of different diameters and being of oval shape, or a separate filter (23, Figs. 3 and 4, not shown) may be used, the filter (23) and funnel (22) in this embodiment also being of plastics, material, and the filter being of larger area, extending out beyond the downpipe. The funnel is shaped to surround two thirds of the circumference of the downpipe (21).
Patent GB-2000799-A (GB)
Title: Liquid cellulose ether-containing compositions
IPC: C08L1/28
Filed: 1978-06-20
Abstract: A liquid composition comprising a water-soluble cellulose ether, a glycol ether which is water-miscible and water has been found to be particularly suitable for the preparation of cellulose ether-containing drilling fluids.
Patent GB-2026353-A (GB)
Title: Workholding devices
IPC: B23Q9/00
Filed: 1978-07-29
Abstract: A workholding device comprises a jaw in the form of an elongate plate 10. The plate is mounted above a worktable 26 with the plane of the plate horizontal and there are means 22, 23, 24 for moving the plate towards and away from the table such that the plate can be used to clamp a workpiece 29 on to the worktable releasably. The plate 10 has a guide 16 extending along the upper face thereof, parallel to longitudinal edge 13 of the plate, so that when the workpiece has been clamped, a portable power saw 31 can be moved along the plate with an edge of the saw body 32 in contact with the guide 16 and the blade 33 overhanging the longitudinal edge 13 of the plate, thereby making a cut in the workpiece which is parallel to the guide 16. <IMAGE>